The curtain goes up for the high school dance department’s winter concert, “Infinite,” with 7:30 p.m. performances Friday and Saturday, Dec. 13 and 14 at the Artists’ Theatre.

The pounding beats, lyrical melodies and the graceful movements of 40 hard-working dancers who have been rehearsing since September fill a program that showcases the work of guest choreographers and is directed by high school dance teacher Lisa Jay.